Answer:
(A) Th = 818.6 K
(B) Qh = 14211.7 J
Explanation:
efficiency (n) = 0.537
temperature of cold reservoir (Tc) = 379 K
heat rejected (Qc) = 6580 J
(A) find the temperature of the hot reservoir (Th)
n = 1 - ![\frac{Tc}{Th}](https://tex.z-dn.net/?f=%5Cfrac%7BTc%7D%7BTh%7D)
0.537 = 1 -
= 1 - 0.537 = 0.463
Th =
Th = 818.6 K
(B) what amount of heat is put into the engine (Qh) ?
from ![\frac{Tc}{Th} = \frac{Qc}{Qh}](https://tex.z-dn.net/?f=%5Cfrac%7BTc%7D%7BTh%7D%20%3D%20%5Cfrac%7BQc%7D%7BQh%7D)
Qh = 6580 ÷ ![\frac{379}{818.6}](https://tex.z-dn.net/?f=%5Cfrac%7B379%7D%7B818.6%7D)
Qh = 14211.7 J
The level and type of impairment determine the severity and location of the injury.
Explanation: The moon's gravity, combined with the waltz of Earth and the moon around their center of mass, forces the oceans into an oval shape, with two simultaneous high tides. ... If the moon were half its mass, then the ocean tides would have been correspondingly smaller and imparted less energy to it.
Formula for acceleration: a = v-v0/t
a is acceleration, v is final velocity and v0 is starting velocity, t is time
Now plug it in
a = 50m/s - 30 m/s = 20 m/s/ 5s = 4 m/s^2
The acceleration is 4 m/s^3